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1. WO2020112449 - SYSTEM, METHOD AND APPARATUS FOR PROVIDING CONSTANT PRESSURE WITHIN AN IRRIGATION SYSTEM AT REDUCED FLOW RATES

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[ EN ]

What is claimed is:

1. A method for providing a constant flow rate within an irrigation system, wherein the method comprises:

receiving and storing irrigation system information, wherein the irrigation system information comprises sprinkler specifications;

receiving and storing an irrigation plan to be executed, wherein the irrigation plan comprises a target amount of an applicant to be applied to a target area;

determining an Available Flow Rate (AVR) for the irrigation system during execution of the irrigation plan;

determining a Required Flow Rate (RFR) from at least one data source selected from the group of data sources comprising: sprinkler package required flowrate, prescribed pulse rate, current ground speed, prescribed ground speed, and VRI prescription parameters;

comparing the Available Flow Rate of the irrigation system to the Required Flow Rate to determine whether the Available Flow Rate (AVR) is greater than or equal to the Required Flow Rate (RFR);

adjusting the pulse rate of a plurality of nozzles to reduce the Required Flow Rate (RFR) to at least the Available Flow Rate (AFR);

AVR

wherein the pulse rate is reduced by the ratio of - ; and

RFR

calculating and selecting a lower ground speed required to apply the target amount of applicant to the target area based on the adjusted pulse rate for the plurality of nozzles.

2. The method of claim 1, wherein the irrigation system information comprises data selected from the group of data comprising: sprinkler specifications, flow rates and pressure requirements.

3. The method of claim 2, wherein the irrigation system information comprises sprinkler specifications.

4. The method of claim 3, wherein the irrigation system information comprises detected flow rates.

5. The method of claim 1, wherein the sprinkler specifications comprise: nozzle ratings and nozzle flow rates.

6. The method of claim 5, wherein the lower ground speed is determined by reducing a first

AVR

ground speed by the ratio of - .

RFR

7. The method of claim 6, wherein the method further comprises the step of:

executing the irrigation plan;

continuously monitoring the Available Flow Rate (AVR) and the Required Flow Rate (RFR) during execution of the irrigation plan; and

AVR

updating the ratio of - .

RFR

8. The method of claim 7, wherein the method further comprises the step of detecting ground speed.

9. The method of claim 8, wherein the method further comprises the step of adjusting the pulse rate of the plurality of nozzles based on detected changes in ground speed.

10. The method of claim 8, wherein the method further comprises:

determining an Available Pressure (AP) for the irrigation system during execution of the irrigation plan;

determining a Minimum Required Pressure (MRP) from at least one data source selected from the group of data sources comprising: sprinkler package required flowrate, prescribed pulse rate, current ground speed, prescribed ground speed, and VRI prescription parameters;

comparing the Available Pressure of the irrigation system to the Minimum Required Pressure to determine whether the Available Pressure is greater than or equal to the Minimum Required Pressure;

adjusting the pulse rate of a plurality of nozzles to reduce the Minimum Required Pressure (MRP) to at least the Available Pressure (AP);

AP

wherein the pulse rate is reduced by the ratio of ; ar|d


calculating and selecting a lower ground speed required to apply the target amount of applicant to the target area based on the adjusted pulse rate for the plurality of nozzles.

11. A method for providing a constant flow rate within an irrigation system, wherein the method comprises:

receiving and storing irrigation system information, wherein the irrigation system information comprises sprinkler specifications;

receiving and storing an irrigation plan to be executed, wherein the irrigation plan comprises a target amount of an applicant to be applied to a target area;

determining an Available Pressure (AP) for the irrigation system during execution of the irrigation plan;

determining a Minimum Required Pressure (MRP) from at least one data source selected from the group of data sources comprising: sprinkler package required flowrate, prescribed pulse rate, current ground speed, prescribed ground speed, and VRI prescription parameters;

comparing the Available Pressure of the irrigation system to the Minimum Required Pressure to determine whether the Available Pressure is greater than or equal to the Minimum Required Pressure;

adjusting the pulse rate of a plurality of nozzles to reduce the Minimum Required Pressure (MRP) to at least the Available Pressure (AP);

AP

wherein the pulse rate is reduced by the ratio of ; ar|d


calculating and selecting a lower ground speed required to apply the target amount of applicant to the target area based on the adjusted pulse rate for the plurality of nozzles.

12. The method of claim 11, wherein the irrigation system information comprises data selected from the group of data comprising: sprinkler specifications, flow rates and pressure requirements.

13. The method of claim 12, wherein the irrigation system information comprises sprinkler specifications.

14. The method of claim 13, wherein the irrigation system information comprises detected flow rates.

15. The method of claim 11, wherein the sprinkler specifications comprise: nozzle ratings and nozzle flow rates ccccc

16. The method of claim 15, wherein the lower ground speed is determined by reducing a

AP

first ground speed by the ratio of MRp

17. The method of claim 16, wherein the method further comprises the step of:

executing the irrigation plan;

continuously monitoring the Available Pressure (AP) and the Minimum Required Pressure (MRP) during execution of the irrigation plan; and

AP

updating the ratio of - .

^ & MRP

18. The method of claim 17, wherein the method further comprises the step of detecting ground speed.

19. The method of claim 18, wherein the method further comprises the step of adjusting the pulse rate of the plurality of nozzles based on detected changes in ground speed.